Enlarge
the first map. Use the grid (latitude and longitude) lines
to estimate the square units of land (in blue) in the Northern
Hemisphere.

Enlarge
the second map. Use the grid (latitude and longitude lines)
to estimate the square units of land there.Note: 97% of Antarctica (covering the south
pole) is always covered in thick ice and snow. You can leave
that out when counting square units.

How
do the land masses in the hemispheres compare? What is the
ratio of land to water in each hemisphere?

Ratios:
Land and Water

Northern Hemisphere: for every 1 unit
(e.g., square mile) of land, there are . . .